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  5. User Instructions

VOKERA Vision S User Instructions

Other manuals for Vision S: User Instructions, User Instructions
Manual is about: high efficiency system boiler

Summary of Vision S

  • Page 1

    38 users instructions installation & servicing instructions these instructions to be retained by user vokèra is a licensed member of the benchmark scheme which aims to improve the standards of installation and commissioning of domestic hot water systems in the uk. Vision s high eficiency system boil...

  • Page 2

    36 users instructions things you should know page 1.1 gas appliances 1 1.2 electrical supply 1 1.3 guarantee registration card 1 1.4 appliance log book (uk only) 1 1.5 how does it work? 1 1.6 dimensions 1 1.7 clearances required 1 1.8 frost protection system 1 1.9 appliance status indicators 1 getti...

  • Page 3: Users Instructions

    1 users instructions 1.1 gas appliances gas safety (installations and use) regulations (uk). In the interests of your safety and that of others it is a legal requirement that all gas appliances are installed and correctly maintained by a competent person and in accordance with the latest regulations...

  • Page 4

    2 fig. 1 pressure gauge ensure the system pressure is set correctly (minimum 0.5-bar) mode selector switch/heating temperature selector mode selector switch: boiler at off/standby - select this position when you want the boiler to be switched off for short periods (days). Heating & hot water - selec...

  • Page 5

    3 digital display symbol/icon description displayed when heating mode is active displayed when frost protection function is ac- tive displayed if an alarm or fault has been detected displayed when low system pressure has been detected displayed when an external sensor is connected to the boiler disp...

  • Page 6

    4 3.1 how to top-up the system pressure (ig. 1-2) the system pressure must be checked periodically to ensure the correct operation of the boiler. The needle on the gauge should be reading between 1 and 1.5 bar when the boiler is in an off position and has cooled to room temperature. If the pressure ...

  • Page 7

    5 fault codes alarm code cause alarm type action _st autostop final call engineer _cl call for service temporary then inal call engineer a01 ignition failure, lame not sensed, internal fault final reset, check appliance operation a02 limit thermostat fault final reset, check appliance operation a03 ...

  • Page 8

    6 all installers are asked to follow the benchmark scheme by adhering to the code of practise, which can be obtained from www.Centralheating.Co.Uk. The vision comprises a range of high-eficiency system boilers with outputs of 20kw and 25kw. These appliances – by design – incorporate electronic ignit...

  • Page 9

    7 1.1 principle components • a fully integrated electronic control board featuring electronic temperature control, anti-cycle control, pump over-run, self- diagnostic fault indicator, full air/gas modulation • aluminium heat exchanger • electronic ignition with lame supervision • integral high-head ...

  • Page 10

    8 section 2 - technical data 2.1 central heating vision 20s vision 25s heat input (kw) 20.00 25.00 maximum heat output (kw) 60/80°c 19.50 24.45 minimum heat output (kw) 60/80°c 4.91 5.90 maximum heat output (kw) 30/50°c 20.84 26.23 minimum heat output (kw) 30/50°c 5.36 6.40 minimum working pressure ...

  • Page 11

    9 key location minimum distance a below an opening (window, air-brick, etc.) 300 mm b above an opening (window, air-brick, etc.) 300 mm c to the side of an opening (window, air-brick, etc.) 300 mm d below gutter, drain-pipe, etc. 25 mm e below eaves 25 mm f below balcony, car-port roof, etc. 25 mm g...

  • Page 12

    10 section 3 - general requirements (uk) this appliance must be installed by a competent person in ac- cordance with the gas safety (installation & use) regulations. 3.1 related documents the installation of this boiler must be in accordance with the relevant requirements of the gas safety (installa...

  • Page 13

    11 this appliance must be installed by a competent person in accordance with and deined by, the standard speciication (domestic gas installations) declaration (i.S. 813). 3a.1 related documents the installation of this boiler must be in accordance with the relevant requirements of the local building...

  • Page 14

    12 the terminal must be protected by a guard of durable material. The guard must be itted centrally over the terminal. Refer to i.S. 813, when the terminal is 0.5 metres (or less) below plastic guttering or 1 metre (or less) below painted eaves. 3a.5 air supply the following notes are intended for g...

  • Page 15

    13 fig. 10 4.1 delivery due to the weight of the appliance it may be necessary for two people to lift and attach the appliance to its mounting. The appliance is contained within a heavy-duty cardboard carton. Lay the carton on the loor with the writing the correct way up. 4.2 contents contained with...

  • Page 16

    14 fig.12 extending the flue connect the bend – supplied with the terminal kit – to the top of the boiler using clamp (supplied) see ig. 10. The additional bends & extensions have push-it connections, care should be taken to ensure that the correct seal is made when assembling the lue system. Connec...

  • Page 17

    15 important the vertical lue terminal is 1.0 metre in length and cannot be cut; therefore it may be necessary to adjust the height of the appliance to suit or use a suitable extension. Connect the vertical lue assembly to the boiler lue spigot us - ing the 100mm clip, gasket & screws (supplied), en...

  • Page 18

    16 fig. 18 horizontal termination (ig. 20) the twin lue system must be converted to the dedicated con - centric lue kit for termination. • the horizontal terminal is supplied with a built-in converter box and cannot be shortened. • a 130mm hole is required for the passage of the concentric terminal ...

  • Page 19

    17 4.6 connecting the gas and water the appliance is supplied with an accessory pack that includes service valves. The service valves are for welding. The accessory pack contains sealing washers’ etc, for use with the service valves. Note it will be necessary to hold the valve with one spanner whils...

  • Page 20

    18 5.1 gas supply installation inspect the entire installation including the gas meter, test for tightness and purge. Refer to bs 6891 (i.S. 813 in roi) for speciic instruction. 5.2 the heating system the appliance contains components that may become damaged or rendered inoperable by oils and/or deb...

  • Page 21

    19 6.1 general once the appliance has been serviced, the benchmark service record must be completed. For uk only: it is important that the benchmark service record is correctly completed and handed to the user. Failure to install and commission the appliance to the manufacturers instructions will in...

  • Page 22

    20 fig. 26 fig. 27 fig. 28 a b c d e f i j fig. 29 fig. 30 m n fig. 31 o k l g h g h appliance or removed component. Undertake a complete com- missioning check as detailed in section 5, after replacing any component. Always test for gas tightness if any gas carrying components have been removed or d...

  • Page 23

    21 6.14 flue fan & mixer (ig. 34-35) carry out component removal procedure as described in 6.4. Remove the air chamber front cover. Locate and remove the gas pipe locking pin ( a1 ) and swing/rotate the gas pipe away from the fan assembly ( b1 ), (if necessary unscrew the gas pipe from the gas valve...

  • Page 24

    22 fig. 35 a1 b1 g1 m1 n1 o1 p1 j1 fig. 36 q1 s1 r1 fig. 38 fig. 37 w1 v1 u1 6.16 main heat exchanger (ig. 35) carry out component removal procedure as described in 6.4. Remove the air chamber front cover. Locate and remove the gas pipe locking pin ( a1 ) and swing/rotate the gas pipe away from the ...

  • Page 25

    23 7.1 checking appliance operation when carrying out any repairs or servicing to the appliance, the relevant commissioning procedure must be undertaken to ensure the continued safe operation of the appliance. Particular attention should be made to ensure gas tightness, water tight- ness and the ele...

  • Page 26

    24 7.3 checking the co 2 and adjusting the gas valve the gas valve must be set-up or adjusted with the aid of a properly calibrated flue gas analyser. Isolate the appliance from the electrical supply and remove the appliance casing as described in 4.7.1, to gain access to the printed circuit board, ...

  • Page 27

    25 7.9 component values & characteris- tics appliance status led and fault codes when the boiler detects a temporary fault condition, the ap- propriate code is shown. If/when the fault is inal, the pump will perform a 60-second post circulation and fault code will be displayed. See table on page. 5....

  • Page 28

    26 7.10 adjustments the boiler has already been adjusted by the manufacturer during production. If the adjustments need to be made again, for example after extraordinary maintenance, replacement of the gas valve, or conversion from methane gas to lpg, ob- serve the following procedures. The adjustme...

  • Page 29

    27 7.10.1 checking the fan speed locate the co button (see fig 40 pos sw1). Select the main selector switch to the on position, press the co button once, the display will then scroll through the fan speeds along with the relevant icon. 7.10.2 thermoregulation to set the temperature regulation curve,...

  • Page 30

    28 20 30 40 50 60 70 80 90 100 -20 0,2 0,4 0,6 0,8 1,0 1,5 2,0 2,5 3,0 t80 t45 -15 -10 -5 0 5 10 15 20 climatic curves external temperature (°c) f l o w o u t l et t emper a t u r e (° c ) t80 maximum set point for standard t range (jp7 removed) t45 maximum set point for low t range (jp7 inserted) f...

  • Page 31

    29 section 8 - wiring diagrams 8.1 external wiring external controls must to be added to the system and they must be connected to the appliance as shown in the following diagrams. For advice on controls that are not featured in this book, please contact vokera technical on 0844 3910999 8.1.1 externa...

  • Page 32

    3 0 brown cn3 blue f hv 1 2 6 1 cn2 brown blue 2 1 3 5 4 gas valve 1 2 4 3 ope ope pink blue p brown n l fuse 3.15a f 230 v m3 f blue blue brown brown brown blue 7 1 cn9 w.P.S. 2 3 1 white white tsc2 blue spark electrode brown yellow/green n f cn1 3 1 2 red (+) blue (hs) pink (pwm) grey (-) cn10 f l...

  • Page 33

    31 9.1 related documents bs 5440 parts 1 & 2 flues & ventilation requirements bs 5449 part 1 forced circulation of hot water systems bs 5482 part 1 domestic butane & propane gas burners in permament dwellings bs 5546 installation of gas hot water supplies for domestic purposes bs 6798 installation o...

  • Page 34

    32 9.6.2 gas valve maximum setting set the co button at maximum (see 10.3.1), once the maximum is obtained check that it corresponds with the appropriate co 2 value (maximum) for the respective appliance. If the co 2 read- ing is correct, proceed to gas valve minimum setting (10.7.2). However, if th...

  • Page 36

    34.

  • Page 37

    35 commissioning: co and combustion ratio check co and combustion ratio check first verify that flue integrity has been visually checked in accordance with the “before co and combustion ratio check” box (above) before proceeding to the “check co and combustion ratio at maximum rate” stage. Set boile...

  • Page 40

    37 c o d . 2 0 0 7 2 1 8 6 - 0 9 /1 3 - ed . 0 registered address: vokèra ltd borderlake house unit 7 riverside industrial estate london colney herts al2 1hg enquiries@vokera.Co.Uk www.Vokera.Co.Uk www.Vokera.Ie sales, general enquires t 0844 391 0999 f 0844 391 0998 vokèra ireland west court, calla...